diff --git a/components/drivers/can/can.c b/components/drivers/can/can.c
index e20fcddcff5cd766a892583839aaac59673b8444..81fdf25a1e60c9218b6ea2627f885afb1d6b3076 100644
--- a/components/drivers/can/can.c
+++ b/components/drivers/can/can.c
@@ -405,6 +405,7 @@ static rt_err_t rt_can_close(struct rt_device *dev)
 
         rt_free(rx_fifo);
         dev->open_flag &= ~RT_DEVICE_FLAG_INT_RX;
+        can->can_rx = RT_NULL;
         /* configure low level device */
         can->ops->control(can, RT_DEVICE_CTRL_CLR_INT, (void *)RT_DEVICE_FLAG_INT_RX);
     }
@@ -418,6 +419,7 @@ static rt_err_t rt_can_close(struct rt_device *dev)
 
         rt_free(tx_fifo);
         dev->open_flag &= ~RT_DEVICE_FLAG_INT_TX;
+        can->can_tx = RT_NULL;
         /* configure low level device */
         can->ops->control(can, RT_DEVICE_CTRL_CLR_INT, (void *)RT_DEVICE_FLAG_INT_TX);
     }